netdev - [PATCH net 2/8] i40e: fix idx validation in i40e_validate_queue

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Message-ID: <20250919184959.656681-3-anthony.l.nguyen@intel.com>
Date: Fri, 19 Sep 2025 11:49:52 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Lukasz Czapnik <lukasz.czapnik@...el.com>,
	anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	leszek.pepiak@...el.com,
	jeremiah.kyle@...el.com,
	gregkh@...uxfoundation.org,
	stable@...r.kernel.org,
	Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
	Simon Horman <horms@...nel.org>,
	Kamakshi Nellore <nellorex.kamakshi@...el.com>
Subject: [PATCH net 2/8] i40e: fix idx validation in i40e_validate_queue_map

From: Lukasz Czapnik <lukasz.czapnik@...el.com>

Ensure idx is within range of active/initialized TCs when iterating over
vf->ch[idx] in i40e_validate_queue_map().

Fixes: c27eac48160d ("i40e: Enable ADq and create queue channel/s on VF")
Cc: stable@...r.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@...el.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Tested-by: Kamakshi Nellore <nellorex.kamakshi@...el.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index cb37b2ac56f1..1c4f86221255 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2466,8 +2466,10 @@ static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
 	u16 vsi_queue_id, queue_id;
 
 	for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
-		if (vf->adq_enabled) {
-			vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
+		u16 idx = vsi_queue_id / I40E_MAX_VF_VSI;
+
+		if (vf->adq_enabled && idx < vf->num_tc) {
+			vsi_id = vf->ch[idx].vsi_id;
 			queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
 		} else {
 			queue_id = vsi_queue_id;
-- 
2.47.1